| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 34,221,610 |
| US States Quiz | 0 | - | 5.00 | 12,284,159 |
| Biggest Cities in the United States | 0 | - | 4.92 | 708,770 |
| U.S. State Capitals Quiz | 0 | - | 4.99 | 1,339,947 |
| World Capitals Quiz | 0 | - | 5.00 | 3,924,062 |
| Country Flags Quiz #1 | 0 | - | 4.95 | 2,145,380 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,168,147 |
| Biggest Urban Areas in the UK | 0 | - | 4.34 | 156,815 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 288,115 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.55 | 89,932 |
| Biggest English-Speaking Cities | 0 | - | 4.39 | 127,826 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.84 | 99,174 |
| Biggest Cities by Language | 0 | - | 4.95 | 194,200 |
| Biggest Mediterranean Cities | 0 | - | 4.73 | 69,346 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 306,851 |
| Most Populous Islands | 0 | - | 4.64 | 102,792 |
| Biggest Cities in Japan | 0 | - | 4.68 | 66,629 |
| Biggest US Cities by Decade | 0 | - | 4.92 | 132,968 |
| Biggest Cities in Russia | 0 | - | 4.49 | 68,839 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,476,342 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,254,403 |
| Countries that Start with A | 0 | - | 4.96 | 1,631,567 |
| Countries that Start with B | 0 | - | 4.94 | 1,769,130 |
| Countries that Start with C | 0 | - | 4.95 | 1,401,805 |
| Countries that Start with S | 0 | - | 4.96 | 1,358,152 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 41,740 |
| Biggest Cities in Poland | 0 | - | 4.73 | 40,220 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 87,094 |
| Biggest Cities Starting With B | 0 | - | 4.38 | 121,035 |
| Biggest Cities Starting With D | 0 | - | 4.46 | 84,807 |
| Biggest Cities Starting With H | 0 | - | 4.48 | 75,759 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 85,070 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 98,835 |
| Biggest Cities Starting With P | 0 | - | 4.44 | 87,652 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 21,061 |
| Biggest U.S. Cities A-Z | 0 | - | 4.54 | 109,185 |
| Biggest World Cities A-Z | 0 | - | 4.39 | 167,097 |
| Biggest Cities in France | 0 | - | 4.52 | 161,724 |
| Biggest Cities in Spain | 0 | - | 4.65 | 133,006 |
| Biggest Cities in Italy | 0 | - | 4.63 | 189,247 |
| Biggest Cities in California | 0 | - | 4.30 | 119,952 |
| Biggest Cities in the World Quiz | 0 | - | 4.84 | 571,945 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 19,901 |
| Biggest Cities in Africa Quiz | 0 | - | 4.88 | 84,182 |
| Countries of Africa | 0 | - | 5.00 | 1,737,901 |
| Biggest Cities in Europe | 0 | - | 4.63 | 404,003 |
| Biggest Cities in Canada | 0 | - | 4.57 | 108,855 |
| Biggest Cities in Sweden | 0 | - | 4.71 | 24,624 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,431 |
| Biggest Cities in China | 0 | - | 4.43 | 118,362 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 126,699 |
| Biggest Cities in Germany | 0 | - | 4.94 | 226,786 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 134,976 |
| Biggest City in Every Country | 0 | - | 4.97 | 66,867 |
| Biggest Cities in North Carolina | 0 | - | 4.48 | 25,815 |
| Biggest City by Time Zone | 0 | - | 4.74 | 49,808 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.42 | 78,223 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,790 |
| Biggest Cities in Switzerland | 0 | - | 4.56 | 38,322 |
| Biggest European Cities by Letter | 0 | - | 4.43 | 109,758 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,497 |
| Biggest Cities in India | 0 | - | 4.52 | 54,914 |
| Biggest Cities in Asia | 0 | - | 4.87 | 86,021 |
| Islands by Largest City #1 | 0 | - | 4.45 | 78,367 |
| Biggest City by Island | 0 | - | 4.49 | 42,254 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 147,148 |
| Biggest Cities in History | 0 | - | 4.47 | 70,668 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 39,881 |
| Random Capital to Country | 0 | - | 4.99 | 2,075,953 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,411 |
| Five Biggest Cities by Country | 0 | - | 4.76 | 122,517 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,430 |
| All Country Flags of the World | 0 | - | 5.00 | 2,278,399 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,261 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,230 |
| Biggest Coastal City by Country | 0 | - | 4.56 | 24,117 |
| U.S. States with the Highest Population Density | 0 | - | 4.46 | 54,987 |
| U.S. States with the Lowest Population Density | 0 | - | 4.90 | 74,609 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.57 | 58,640 |
| Most Populous World Capitals | 0 | - | 4.89 | 128,230 |
| Biggest City by Region | 0 | - | 4.50 | 29,180 |
| Most Populous 2nd Cities | 0 | - | 4.53 | 39,283 |
| Biggest City by Region #2 | 0 | - | 4.44 | 19,874 |
| United States Map Quiz | 0 | - | 4.96 | 3,583,148 |
| Europe Map Quiz | 0 | - | 4.99 | 3,726,832 |
| Africa Map Quiz | 0 | - | 5.00 | 1,759,861 |
| South America Map Quiz | 0 | - | 4.99 | 1,258,492 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,332,676 |
| Biggest European Cities by Century | 0 | - | 4.96 | 105,220 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,826 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 72,028 |
| Capitals of Most Populated Countries | 0 | - | 4.97 | 107,706 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 113,376 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 224,798 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,809 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,666 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 57,018 |
| Islands by Largest City #2 | 0 | - | 4.56 | 23,918 |
| Biggest Cities by Latitude | 0 | - | 4.73 | 24,111 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.92 | 59,263 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 39,409 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,694 |
| Biggest Two-Word Cities | 0 | - | 4.71 | 33,989 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 58,323 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.73 | 55,555 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,870 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 146,284 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.57 | 68,407 |
| Biggest Cities in the World - Extreme | 0 | - | 4.97 | 73,187 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,882,913 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,389 |
| Countries With More Than 100 Million People | 0 | - | 4.97 | 100,726 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 118,327 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 123,391 |
| Top 10 Least Populous U.S. States | 0 | - | 4.95 | 146,812 |
| Cities of China (With Some Help) | 0 | - | 4.77 | 23,583 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.90 | 33,994 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 42,778 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 217,736 |
| Countries with Megacities | 0 | - | 4.99 | 176,107 |
| Countries of Europe by Population | 0 | - | 4.98 | 108,501 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 168,393 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 127,166 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 123,488 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.89 | 32,461 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,650,284 |
| Biggest Cities in the UK | 0 | - | 4.42 | 79,835 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 81,814 |
| Biggest World Cities in 1850 | 0 | - | 4.52 | 47,602 |
| Megacities on a World Map | 0 | - | 4.97 | 199,761 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 174,549 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.78 | 48,865 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 95,496 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 73,692 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.81 | 38,711 |
| Most Populous Countries by Year | 0 | - | 4.78 | 79,135 |
| Ten Northernmost Megacities | 0 | - | 4.41 | 44,084 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 74,620 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.42 | 60,659 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,685 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 53,022 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 72,124 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,701 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 312,688 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 125,026 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 50,068 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.57 | 34,723 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.44 | 35,948 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 434,641 |
| Megacities on an Empty Map | 0 | - | 4.96 | 77,219 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 52,049 |
| All 3M Cities on the World Map | 0 | - | 4.94 | 53,978 |
| All Cities in China with Population of 1 Million | 0 | - | 4.66 | 27,644 |
| Northernmost Major City by Country | 0 | - | 4.50 | 28,129 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.93 | 21,079 |
| All Cities in India with Population of 1 Million | 0 | - | 4.80 | 32,826 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 55,310 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.93 | 78,462 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.46 | 42,457 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 76,046 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 87,133 |
| Most Populous Country by First Two Letters | 0 | - | 4.64 | 60,263 |
| Two Largest Cities by First Two Letters | 0 | - | 4.65 | 56,231 |
| Largest World Capitals with Exceptions | 0 | - | 4.66 | 37,764 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.71 | 62,100 |
| Most Populous Islands of Europe | 0 | - | 4.42 | 20,345 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,567 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,350 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,432 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 47,976 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 99,152 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,309 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.53 | 43,379 |
| Biggest Cities in Deserts | 0 | - | 4.86 | 37,510 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 261,710 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.93 | 79,678 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 61,866 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.96 | 112,376 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 86,134 |
| Ten Southernmost Megacities | 0 | - | 4.68 | 32,423 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,452 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 40,014 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 44,961 |
| Flags to Largest Cities | 0 | - | 4.55 | 23,067 |
| 500 Biggest US Cities | 0 | - | 4.88 | 76,039 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 26,461 |
| Saint Lucia Country Quiz | 0 | - | 4.57 | 13,891 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 54,370 |
| Demographics Multiple Choice | 0 | - | 4.55 | 36,286 |
| Biggest Cities in France - Extreme | 0 | - | 4.84 | 31,946 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.82 | 45,307 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 51,180 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,554 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,496 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 67,065 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,707 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 27,515 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.82 | 42,046 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,517,501 |
| Biggest Cities in Australia on a Map | 0 | - | 4.58 | 27,139 |
